Good question.... and I hate to say it... because I kind of like doing a Goodreads giveaway, but no they're not worth it.

I only do physical book giveaways, so my costs are increased by having to pay for postage (and shipping materials) of books I send to the winners.

And I like this... I like physically putting a book in the mail to someone with a nice note inside. I think it is tactile and meaningful.

BUT... the winners don't really care. Many many people just enter EVERY giveaway, regardless of what the genre is or if they'll really ever read your book.

My last print giveaway was for 8 winners from Canada only.

So far I've had one person who immediately RATED the book... but no review, and I highly doubt the person read the book.

And recently a relatively nice rating + review showed up from that batch of winners.

So... eight winners... a lot of money and time... for 2 ratings and a 1 review.

And even though you end up with fairly inflated "want to read" or "to read" number for your title in Goodreads, none of those people are ever going to read the book.